Japan vs Asian country

Japan and Asian country both are nouns.

Word	Noun	Adjective	Verb	Adverb
Japan	Yes	No	No	No
Asian country	Yes	No	No	No

Japan (noun)	Asian country (noun)
a constitutional monarchy occupying the Japanese Archipelago; a world leader in electronics and automobile manufacture and ship building	any one of the nations occupying the Asian continent
a string of more than 3,000 islands to the east of Asia extending 1,300 miles between the Sea of Japan and the western Pacific Ocean